Blog articles

Dual band pass filters are a popular choice when photographing emission nebulae. In this article, I explore the issues they help to mitigate, and show how much difference they make for me.

A brief look at these units of measurement in the context of astrophotography, including some discussion on the related topics of atmospheric seeing, pixel scale, and sampling.

Changes in ambient temperature can cause focus to shift during the course of an imaging session. This article explores the results of not refocusing regularly, as well as some simple but effective tools to help achieve perfect focus.